package com.laker.autotest.api.core.auth;

/**
 * OAuth2 Token Provider 示例，支持自动获取和刷新token
 * 实际项目中可扩展为调用授权服务器获取token
 */
public class OAuthAuthTokenProvider extends BearerAuthTokenProvider {
    private final String clientId;
    private final String clientSecret;
    private final String tokenEndpoint;
    private long expireAt = 0L;

    public OAuthAuthTokenProvider(String clientId, String clientSecret, String tokenEndpoint) {
        super(null);
        this.clientId = clientId;
        this.clientSecret = clientSecret;
        this.tokenEndpoint = tokenEndpoint;
    }

    @Override
    public String getAuthHeader() {
        if (super.getAuthHeader() == null || System.currentTimeMillis() > expireAt) {
            refreshToken();
        }
        return super.getAuthHeader();
    }


    /**
     * 实际项目中应实现HTTP请求获取token，以下为伪代码
     */
    public synchronized void refreshToken() {
        // 这里应实现实际的HTTP请求获取token，以下为伪代码
        // String response = HttpUtil.post(tokenEndpoint, ...clientId, clientSecret...);
        // 解析response，获取access_token和expires_in
        // setToken(access_token); expireAt = System.currentTimeMillis() + expires_in * 1000;
        // 示例：
        setToken("mock-oauth-token");
        expireAt = System.currentTimeMillis() + 3600_000; // 1小时有效期
    }
}